Mutation of the SP1 sequence impairs both multimerization and membrane-binding activities of human immunodeficiency virus type 1 Gag.

Abstract excerpt

The Gag protein of human immunodeficiency virus type 1 contains a 14-amino-acid region, termed SP1, between the capsid and downstream nucleocapsid sequences. Although SP1 is known to be indispensable for virus production, the mechanisms involved are mostly unclear. In this study, we demonstrate that an M368A mutation within SP1 severely diminished the ability of Gag to associate with cellular membranes. Although...

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